I am a prime number.
The double of myself is equal to the square of me.

which number am I?

When is the top of a mountain similar to a savings account?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

A kind heart person buy packed food at 3$/packet from United states and sells them at 1$/packet at Africa. After some time he becomes a millionaire.

How come the guy become millionaire ?

Solve the puzzle by telling what does below picture means.

In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?

Which country gets ill every time?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

I’m tall when I’m young, and I’m short when I’m old. What am I?

John is found dead in a bare field. Nobody killed John,
John did not commit suicide.

Inspector Jacob found a bag just a few meters away from John which could save his life. What was in the bag?